Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/html/shadow/MediaControls.h"
 
 #include "core/HTMLNames.h"
 #include "core/css/StylePropertySet.h"
 #include "core/dom/Document.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/StyleEngine.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLVideoElement.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/heap/Handle.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 namespace {
 
 Element* getElementByShadowPseudoId(Node& rootNode, const char* shadowPseudoId)
 {
     for (Element& element : ElementTraversal::descendantsOf(rootNode)) {
         if (element.shadowPseudoId() == shadowPseudoId)
             return &element;
@@ skipping 50 matching lines @@
     {
         // Force a relayout, so that the controls know the width.  Otherwise,
         // they don't know if, for example, the cast button will fit.
         m_mediaControls->mediaElement().clientWidth();
     }
 
     MediaControls& mediaControls() { return *m_mediaControls; }
     Document& document() { return m_pageHolder->document(); }
 
 private:
-    std::unique_ptr<DummyPageHolder> m_pageHolder;
+    OwnPtr<DummyPageHolder> m_pageHolder;
     Persistent<MediaControls> m_mediaControls;
 };
 
 TEST_F(MediaControlsTest, HideAndShow)
 {
     mediaControls().mediaElement().setBooleanAttribute(HTMLNames::controlsAttr, true);
 
     Element* panel = getElementByShadowPseudoId(mediaControls(), "-webkit-media-controls-panel");
     ASSERT_NE(nullptr, panel);
 
@@ skipping 89 matching lines @@
     mediaControls().mediaElement().setBooleanAttribute(HTMLNames::disableremoteplaybackAttr, true);
     simulateRouteAvailabe();
     ASSERT_FALSE(isElementVisible(*castOverlayButton));
 
     mediaControls().mediaElement().setBooleanAttribute(HTMLNames::disableremoteplaybackAttr, false);
     mediaControls().reset();
     ASSERT_TRUE(isElementVisible(*castOverlayButton));
 }
 
 } // namespace blink